If a chord which is normal to the parabo...

If a chord which is normal to the parabola at one end subtend a right angle at the vertex, then angle to the axis is

A

`alpha=sqrt(2)`

B

`alpha=sqrt(3)`

C

`alpha=(1)/(sqrt(2))`

D

`alpha=(1)/(sqrt(3))`

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The correct Answer is:

A

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